The following terms and conditions (“Terms of Service”) apply to the Services to be delivered by the entity shown on the applicable Service Order (as defined below) on behalf of AddSync Manager, a Sinch group company to the customer ordering the Services or identified in the Service Order (“Customer” or “you”).
BY SUBSCRIBING TO OUR SERVICES, YOU AGREE THAT YOU HAVE READ AND AGREE, WITHOUT RESERVATIONS, TO BE BOUND BY THE LATEST VERSION OF THESE TERMS OF SERVICE.
The Services are exclusively reserved for a professional use and are not available to minors under the age of 18.
1. DEFINED TERMS
The following words, when capitalized, have the meaning stated:
“Affiliate” means any entity that is owned or that owns a party, or that is under its common control.
“Agreement” means, collectively, the Service Order, these Terms of Service, and each of the other documents referenced in these Terms of Service, that as a whole, are all part of the contract between the Customer and AddSync.
“Confidential Information” means non-public information disclosed by one party to the other in any form that (i) is designated as “Confidential”; (ii) a reasonable person knows or reasonably should understand to be confidential; or (iii) includes either party’s products, customers, marketing and promotions, know-how, or the negotiated terms of the Agreement; and which is not independently developed by the other party without reference to the other’s Confidential Information or otherwise known to the other party on a non-confidential basis prior to disclosure.
“Configuration Requirements” means those specifications as required to perform the Services, such as a required reference architecture, documentation or software version.
“Control Panel” means the customer portal accessible to Customer containing, among other information, the pricing terms applicable to Customer’s use of the Services and users designated to receive support.
“Customer Configuration” means any Customer configuration or information technology system needed to enable the Services or to which the Services relate.
“Customer Data” means all data which you receive, store, or transmit on or using the Customer Configuration.
“Deliverables” means the tangible or intangible materials which are prepared for your use in the course of performing the Services and that are specifically identified in a Service Order as Deliverables and described therein.
“Intellectual Property” means patents, copyrights, trademarks, trade secrets, software and source code, specifications and ancillary documentation and any other proprietary intellectual property rights.
“Personal Data” means any: (i) personally identifiable information or information that is referred to as personal data (including sensitive personal data), PII (or other like term) under applicable data protection or privacy law and includes information that by itself or combined with other information can be used to identify a person, (ii) trade secrets, (iii) financial records (iv) other sensitive, regulated, or confidential information.
“Representatives” means a party’s respective service providers, officers, directors, employees, contractors, Affiliates, suppliers, agents.
“Services” means the services identified in a specific Service Order.
“SLA” means any provision providing a specified credit remedy for an identified failure to deliver or provide the Services to the identified standard.
“Service Order” means the document which describes the Services you are purchasing, including any online order, process, or tool through which you request or provision Services.
2. SERVICES & SUPPORT
2.1 General. AddSync will provide the Services in accordance with the Agreement and all applicable laws. AddSync shall have no obligation to provide Services for Customer Configurations which do not meet the Configuration Requirements. AddSync will provide support only to those individuals designated in the Control Panel and is not required to provide any support directly to your end users.
2.2 Service Level Agreement. AddSync guarantees that the services (meaning any or all of the API, SMTP and Outbound Delivery services listed on our status page but excluding AddSync Optimize offerings) will be available 99.99% of the time in any given calendar month, excluding maintenance. You are entitled to a credit of 5% of your given monthly fee for the Services for each 30 minutes of unavailability (after the first .01%) in a given monthly period.
In addition, to receive a credit, you must make the request by creating a support ticket in the Control Panel within thirty (30) days following the end of the downtime. You must show that your use of the Services was adversely affected in some way as a result of the downtime to be eligible for the credit. Notwithstanding anything in these Terms of Service to the contrary, the maximum total credit for any calendar month, including all guaranties, shall not exceed 50% of the fees for that calendar month. Credits that would be available but for the limitation to open a support ticket within the timeframe set forth above will not be carried forward to future billing periods; eligible credits will only be carried forward to the extent the Customer renews its subscription for the subsequent term period.
2.3 Delivery & Filtering. AddSync will use commercially reasonable efforts to deliver your email messages, but cannot guarantee delivery. Third-party filtering services and other policies of recipient email services may prevent successful delivery of your messages. While our Service does provide some email filtering services designed to filter spam it does not provide virus scanning, it is recommended that you employ additional security measures to protect against spam, email phishing attempts and email infected with viruses. You acknowledge that the limitations of the filtering service will likely result in the capture of some legitimate email and the failure to capture some unwanted email, including email infected with viruses. AddSync or the AddSync is not responsible for any damages arising from the failure of the Service’s filtering services to filter unwanted email or from the capture of legitimate email, or from a failure of your email to reach its intended recipient. Furthermore, You acknowledge that AddSync does not control the transfer of Data via the internet, and cannot be held responsible for delays or delivery problems arising from internet or other outside connection issues.
2.4 Unsupported & Test Services. AddSync may designate Services as “non-standard”, “reasonable endeavors” or “best efforts”, or with like designation (collectively “Unsupported Services”). AddSync makes no representation or warranty with respect to Unsupported Services except that it will use good faith efforts as may be expected of technicians having generalized knowledge and training in information technology systems. AddSync has no guarantee of results in this regard. AddSync or the AddSync shall not be liable to you for any loss or damage arising from the provision of Unsupported Services and SLAs shall not apply to Unsupported Services, or any other aspect of the Customer Configuration that is adversely affected by Unsupported Services. If you use any Services that have been designated as a “Test”, “Beta” or “early access” or with like designation then your use of those Services is subject to the AddSync Test Terms as provided to Customer.
2.5 AddSync Optimize. AddSync will provide the AddSync Optimize deliverability tools and services as set forth in the Service Order, subject to the service level agreements and other limitations as more particularly described in the product description and/or on AddSync’s documentation for such tool or service.
2.6 General Disclaimers. AddSync makes no commitment to provide any services other than the Services stated in the Service Order. AddSync is not responsible to you or any third party for unauthorized access to your Customer Data or for unauthorized use of the Services that is not solely caused by AddSync’s failure to meet its security obligations in Section 4 (Security and Data Privacy). AddSync and its Representatives disclaim any and all warranties not expressly stated in the Agreement to the maximum extent permitted by law including implied warranties such as merchantability, satisfactory quality, fitness for a particular purpose and non-infringement. AddSync expressly reserves the right, at any time during the term of the Agreement, to adapt, arrange and/or modify any of the components granting access and use rights to the Service and the associated documentation, provided that the maintenance and support commitments are complied with for these operations. Similarly, AddSync may, at any time, discontinue providing a platform deemed undesirable and/or obsolete and migrate services to a new infrastructure; in which case, AddSync will endeavor to inform you as early as possible.
3. CUSTOMER OBLIGATIONS
3.1 Generally. You may use the Services for commercial and professional purposes only and may not use the Services in any situation where failure or fault of the Services or the Customer Configuration could lead to death or serious bodily injury of any person or physical or environmental damage. You will enable AddSync’s reasonable method for access to the Customer Configuration for the purpose of performing the Services and invoicing. You must cooperate with AddSync’s reasonable investigation of outages, security problems, and any suspected breach of the Agreement. You are responsible for keeping your account permissions, billing, and other account information up to date. You agree that your use of any Customer Configuration provided by AddSync will comply with the Acceptable Use Policy (the “AUP”) at https://add-sync.com/legal/aup/. You agree that you are solely responsible for the suitability of the Services and your compliance with any applicable laws, including export laws and data privacy laws. You also agree to ensure that your own users comply with the Agreement (including the AUP). In the event we determine that your (including your users’) act(s) or omission(s) fail(s) to comply with the AUP, we reserve the right to take any additional action or measure we deem reasonably necessary or required to preserve the integrity of our Services, platforms, networks and other customers or otherwise comply with applicable laws, rules, regulations and policies.
3.2 Documentation. You agree to comply with the AddSync and Sinch’s Group documentation found on the respective websites and agree that AddSync may establish new procedures for your use of the Services as it deems necessary for the optimal performance of the Services. Requirements include, but are not limited to, an individual email message not exceeding the per-message size limit (including attachments) of 25MB or it may be permanently lost.
3.3 Data Backup. AddSync shall only back up data to the extent stated on a Service Order. It is your responsibility to ensure the integrity and security of Customer Data and to regularly backup and validate the integrity of backups of Customer Data on an environment separate from the Customer Configuration.
3.4 Suspension of Services. AddSync may suspend the Services (in whole or in part) without liability if: (i) AddSync reasonably believes or determines that the Services are being used in violation of the Agreement (including the AUP); (ii) you don’t cooperate with our reasonable investigation of any suspected violation of the Agreement (including the AUP); (iii) there is an attack on the Services or your Services are accessed or manipulated by a third party without your consent, (iv) AddSync is required by law or by a regulatory or government body to suspend the Services, or (v) there is another event for which AddSync reasonably believes that the suspension or alteration of the Services is necessary or required to protect the AddSync network, company, group companies or our other customers. You agree that if the Services are reinstated after a suspension for non-payment or for your breach of the Agreement (including the AUP), you will pay a reinstatement fee of $500. In event AddSync suspends the Services in whole or in part pursuant to this Section 3.4 more than twice during a calendar month or three times during the applicable term, AddSync will also have the right to immediately terminate the Agreement for breach upon written notice in addition to any other remedies available hereunder or otherwise at law or in equity.
4. SECURITY AND DATA PRIVACY
4.1 Generally. AddSync shall provide the Services in accordance with the data processing addendum set forth at https://add-sync.com/legal/dpa/ and any additional security specifications identified in the Service Order or these Terms of Service. You must use reasonable security precautions in connection with your use of the Services, including appropriately securing and encrypting Personal Data stored on or transmitted using the Customer Configuration. Customer Data is, and at all times shall remain, your exclusive property. AddSync will not use or disclose Customer Data except as materially required to perform the Services or as required by law. Customer agrees not to provide AddSync or use the Services in connection with any sensitive personal data or protected health information or other information that can be deemed sensitive personal data or protected health information without obtaining AddSync’s prior written consent and entering into a separate agreement with AddSync governing the transmission of such information in connection with Customer’s use and benefit of the Services. You may not attempt to probe, scan, penetrate or test the vulnerability of a AddSync system or network, or to breach the AddSync security or authentication measures, whether by passive or intrusive techniques, without our prior written consent and entering into a separate agreement with and acceptable to AddSync governing the scope, and containing appropriate restrictions and requirements for any such penetration testing.
4.2 Content Privacy. You acknowledge and understand that the Services may include the transmission of unencrypted email in plain text over the public internet. You are responsible for encrypting any Personal Data you use in conjunction with the Services. Email sent using the Services may be unsecured, may be intercepted by other users of the public internet, and may be stored and disclosed by third parties (such as a recipient’s email service provider). Although Services include support for TLS, content may be transmitted even if the recipient does not also support TLS, resulting in an unencrypted transmission.
4.3 Data Processing Addendum. In the course of providing the Services under the Agreement, AddSync may process certain Personal Data on your behalf and in such cases, the Parties agree to comply with the terms in the Data Processing Agreement (“DPA”), that include the standard contractual clauses, and as may be amended from time to time; such DPA shall become part of the Agreement.
5. INTELLECTUAL PROPERTY
5.1 Pre-Existing. Each party shall retain exclusive ownership of Intellectual Property created, authored, or invented by it prior to the commencement of the Services. If you provide AddSync with your pre-existing Intellectual Property (“Customer IP”), then you hereby grant to AddSync, during the term of the applicable Service Order, a limited, worldwide, non-transferable, royalty-free, right and license (with right of sub-license where required to perform the Services) to use the Customer IP solely for the purpose of providing the Services. You represent and warrant that you have all rights in the Customer IP necessary to grant this license, and that AddSync’s use of such Customer IP shall not infringe on the Intellectual Property rights of any third party.
5.2 Created by AddSync. Unless otherwise specifically stated in the applicable Service Order, and excluding any Customer IP, AddSync shall own all Intellectual Property created as part of providing the Services or contained in the Deliverables. Unless otherwise specifically stated in the Agreement, and subject to your payment in full for the applicable Services, AddSync grants to you a limited, non-exclusive, non-transferable, royalty-free right and license (without the right to sublicense) to use any Deliverables, and during the term of the Service Order any Intellectual Property (excluding any Third Party Software), provided to you by AddSync as part of the Services for your internal use as necessary for you to enjoy the benefit of the Services.
5.3 Third Party Software. AddSync may provide third party software for your use as part of the Services or to assist in our delivery of the Services (“Third Party Software”). Unless otherwise permitted by the terms of the applicable license you may not (i) assign, grant or transfer any interest in the Third Party Software to another individual or entity, (ii) reverse engineer, decompile, copy or modify the Third Party Software, (iii) modify or obscure any copyright, trademark or other proprietary rights notices that are contained in or on the Third Party Software, or (iv) exercise any of the reserved Intellectual Property rights provided under the laws governing the Agreement. You may only use Third Party Software provided for your use as part of the Services (identified on the Service Order) on the Customer Configuration on which it was originally installed, subject to any additional restrictions identified in these Terms of Service or Service Order. You are prohibited from using Third Party Software which AddSync installs in order to assist our delivery of the Services. Upon termination of the Service Order, you will permit removal of the Third Party Software. AddSync makes no representation or warranty regarding Third Party Software except that AddSync has the right to use or provide the Third Party Software and that AddSync is in material compliance with the applicable license.
5.4 Infringement. If the delivery of the Services infringes the intellectual property rights of a third party and AddSync determines that it is not reasonably or commercially practicable to obtain the right to use the infringing element, or modify the Services or Deliverable such that they do not infringe, then AddSync may terminate the Service Order on ninety days’ notice and will not have any liability on account of such termination except to refund amounts paid for unused Services (prorated as to portions of Deliverables deemed infringing).
6. FEES
6.1 Fees. You agree to pay the fees for the Services based on the rates and charges set forth in your Control Panel or Service Order, as applicable. Fees are due within thirty (30) days from the invoice date. If you have arranged for payment by credit card, AddSync may charge your card or account on or after the invoice date. If your undisputed payment is overdue for more than thirty (30) days, AddSync may suspend the Services and any other services you receive from AddSync on written notice. AddSync shall undertake collection efforts prior to any suspension. Invoices that are not disputed within one hundred and twenty (120) days of the invoice date are conclusively deemed accurate. Fees must be paid in the currency identified in your Control Panel or Service Order, as applicable. You are solely responsible for all wire transfer and other bank fees associated with the delivery of payments to AddSync. AddSync may charge interest on overdue amounts at the greater of 1.5% per month or the maximum legal rate, and may charge you for any cost or expense arising out of our collection efforts. To the extent Customer does not pay in full its outstanding invoices within thirty (30) days after an invoice is due in accordance with the payment terms set forth in the applicable Service Order, AddSync reserves the right to offset any such amounts due against any amounts due by any Sinch group company.
6.2 Fee Increases. AddSync may revise the pricing terms that apply to your use of the Services at any time by providing you with notice pursuant to Section 11 of these Terms of Service. With respect to Customers that are not party to a then-effective Service Order (i.e. self-service Customers), such rate changes will be effective immediately upon the posting of an update to your Control Panel. With respect to Customers that are party to a then-effective Service Order (i.e. contract Customers), AddSync reserves the right to increase rates or charges for the Services, provided, however, that any such revised rates or charges assessed to you for Services under such Service Order will not become effective until the commencement of the next renewal term of such Service Order (and the Service Order will be deemed amended to reflect such increased rates or charges). If at any time a third party license or service provider directly or indirectly increases the fee they charge AddSync for your use of Third Party Software or services, AddSync may increase your fees by the same percentage amount on thirty (30) days’ advance written notice (for either self-service or contract Customers). Self-service customers may be able to upgrade or downgrade Customer’s plan through Customer’s online account on AddSync’s website at any time; provided, however, that upgrade to the Customer’s plan will take effect immediately, while downgrades will take effect at the end of the then-current term.
6.3 Taxes. All amounts due to AddSync under the Agreement are exclusive of any value added, goods and services, sales, use, and like taxes, (collectively, “Tax”). You must pay AddSync the Tax that is due or provide AddSync with satisfactory evidence of your exemption from the Tax in advance of invoicing. You must provide AddSync with accurate and adequate documentation sufficient to permit AddSync to determine if any Tax is due. All payments to AddSync shall be made without any withholding or deduction for any taxes except for withholding (or similar) taxes imposed on income that may be attributable to AddSync in connection with its provision of the Services that you are legally required to withhold and remit to the applicable governmental or taxing authority (“Local Withholding Taxes”). You agree to timely provide AddSync with accurate factual information and documentation of your payment of any such Local Withholding Taxes. AddSync shall remit such cost to you in the form of a credit on your outstanding account balance following receipt of sufficient evidence of payment of any such Local Withholding Taxes.
6.4 Reimbursement for Expenses. Unless otherwise agreed in the Service Order or otherwise provided for in the Control Panel, if any of the Services are performed at your premises, you agree to reimburse AddSync for the actual substantiated out-of-pocket expenses of its Representatives.
7. TERM AND TERMINATION
7.1 Term. The Agreement shall continue until terminated in accordance with its terms or the termination of the final Service Order, whichever is the later.
Unless otherwise expressly stated in the applicable Service Order, the term for self-service customers has an initial one month term and will automatically renew at the end of the billing period unless either party provides the other with written notice of non-renewal at least thirty (30) days prior to the expiration of the then current term.
Unless otherwise expressly stated in the applicable Service Order, the term for contract customers will be as set forth in the applicable Service Order and will automatically renew upon the expiration of the applicable term unless either party provides the other with written notice of non-renewal at least thirty (30) days prior to the expiration of the then-current term.
Notwithstanding the foregoing, unless otherwise stated in the Agreement, no automatic renewal will be applicable for any SMS messaging packages which are due and payable in advance for the desired volumes and all SMS messaging packages shall expire if not used prior to the expiration of the then current term.
7.2 Termination for Cause. Either party may terminate the Agreement or the affected Service Order(s) for cause on written notice if the other party materially breaches the Agreement and, where the breach is remediable, does not remedy the breach within forty-five (45) days of the non-breaching party’s written notice describing the breach.
7.2.1 If following suspension of your Services for non-payment, your payment of any invoiced undisputed amount remains overdue for a further ten (10) days, AddSync may terminate the Agreement or the applicable Service Order(s) for breach on written notice.
7.2.2 Either party may terminate the Agreement and the Service Order(s) on written notice if the other enters into compulsory or voluntary liquidation, or ceases for any reason to carry on business, or takes or suffers any similar action which the other party reasonably believes means that it may be unable to pay its debts. Notwithstanding anything to the contrary in the Agreement, the fees for the Services shall become due immediately on such an occurrence.
8. CONFIDENTIAL INFORMATION
8.1 Generally. Each party agrees not to use the other’s Confidential Information except in connection with the performance or use of the Services, the exercise of its legal rights under the Agreement, or as required by law, and will use reasonable care to protect Confidential Information from unauthorized disclosure. Each party agrees not to disclose the other’s Confidential Information to any third party except: (i) to its Representatives, provided that such Representatives agree to confidentiality measures that are at least as stringent as those stated in these Terms of Service; (ii) as required by law; or (iii) in response to a subpoena or court order or other compulsory legal process, provided that the party subject to such process shall give the other written notice of at least seven days prior to disclosing Confidential Information unless the law forbids such notice.
8.2 Routing Data. Your email messages and other items sent or received via the mail service will include information that is created by the systems and networks that are used to create and transmit the message including information such as server hostnames, IP addresses, timestamps, mail queue file identifiers, and spam filtering information (“message routing data”). You agree that AddSync may view and use the message routing data for our general business purposes, including maintaining and improving security, improving our services, and developing products. In addition, you agree that AddSync may disclose message routing data to third parties in aggregate statistical form, provided that AddSync does not include any information that could be used to identify you.
8.3 Usage Data. AddSync collects and stores information related to your use of the Services, such as use of the Website, API, SMTP and filtering choices and usage. You agree that AddSync may use this information for our general business purposes and may disclose the information to third parties in aggregate statistical form, provided that AddSync does not include any information that could be used to identify you.
9. MISCELLANEOUS
9.1 Some terms are incorporated into the Agreement by reference to pages on the Mailgun website and AddSync may revise those terms from time to time (including these Terms of Service). Such revisions will be effective and supersede and form part of the Agreement as of the time (i) you enter into a new Service Order referencing the terms subject to the revisions or (ii) a Service Order automatically renews pursuant to the Agreement in which case you acknowledge that you have reviewed and accept the then-current version of the terms as of the date of the renewal. If there is a conflict between the terms of the Agreement, the documents will govern in the following order: the Service Order, then these Terms of Service. The headings or captions in the Agreement are for convenience only. If over time you enter into multiple Agreements for a given Customer Configuration (for example to add additional components or services) then the most recent terms referenced in the Service Order(s) will govern the entirety of the Services for the given Customer Configuration.
9.2 Unless otherwise expressly permitted in the Agreement the terms of the Agreement may be varied only by a written agreement signed by both parties that expressly refers to the Agreement. A Service Order may be amended to modify, add, or remove services by a formal written agreement signed by both parties, or by an exchange of correspondence (including via the AddSync ticketing system) that includes the express consent of an authorized individual for each of us. The pre-printed terms of your purchase order or other business form or terms that you provide shall be void and of no effect.
9.3 If any part of the Agreement is found unenforceable, the rest of the Agreement will continue in effect, and the unenforceable part shall be reformed to the extent possible to make it enforceable and give business efficacy to the Agreement. Each party may enforce its respective rights under the Agreement even if it has waived the right or failed to enforce the same or other rights in the past. The relationship between the parties is that of independent contractors and not business partners. Neither party is the agent for the other and neither party has the right to bind the other on any agreement with a third party.
9.4 The following provisions in these Terms of Service shall survive expiration or termination of the Agreement: Intellectual Property, Confidential Information, Indemnification, Limitation on Damages, Governing Law, Notices, Miscellaneous, all terms of the Agreement requiring you to pay any fees for Services provided prior to the time of expiration or termination, or requiring you to pay an early termination fee, and any other provisions that by their nature are intended to survive expiration or termination of the Agreement.
9.5 The Agreement constitutes the complete and exclusive understanding between the parties regarding its subject matter and supersedes and replaces any prior or contemporaneous representation(s), agreement(s) or understanding(s), written or oral.
Last revised 12/15/2025.
