How big can an email be?
TBA mailboxes support e-mails up to 50 MB. However, we recommend that you do not send e-mails larger than 20 MB. Many recipients only allow 10-25 MB. For larger files, we recommend using a download link.
Why are HTML e-mails not being received?
HTML emails are classified as spam by some mail servers – especially if they contain incorrect code, too many external links or lurid subject lines. Use clean, simple HTML code and test the display in various programs. We are happy to support you with tested templates.
What to do if you have problems with mass emails?
If too many similar emails arrive at once, many providers block receipt as a protective measure. Mass mailing via TBA servers is also limited (see terms and conditions). Please discuss larger mailing campaigns with us. Good newsletter tools can automatically distribute (“throttle”) the dispatch.
Why are images not displayed in emails?
Many programs only load images if the recipient is online or explicitly allows this. Images should be used sparingly and are not absolutely necessary for understanding the email. Alternatively, a text version should always be sent.
HTML or text only?
Not all recipients support HTML. An alternative text-only version improves readability and deliverability. Good mailing tools offer the option of customizing this version visually.
Display problems with font sizes
Different screen resolutions or program settings can result in emails being displayed too small or too large. If possible, use standard font sizes and avoid unnecessary formatting.
How does my e-mail remain technically trustworthy?
Make sure that SPF, DKIM and DMARC are set up correctly and that the mail is sent via TLS (we will be happy to help you with this if you host your email domain with us). If one of these measures is missing, the mail may be blocked or marked as spam. Each newsletter must also contain a functioning unsubscribe link.
Newsletter and circulars
Please coordinate planned circulars or newsletters with us. We will be happy to advise you on secure mailing channels, suitable tools and legal requirements (e.g. GDPR).
