File Cache

You may want to add attachments or images to your transactional emails. These files may be available in your local device. However, ZeptoMail offers a provision to store them on its server through the File cache section. Using File cache allows you to manage all your attachments and images from a centralized location, improving efficiency and organization. Once a file is uploaded to the File cache, it is automatically assigned a File cache key that you can add it to your API to embed the image or attachment in your email content.

Points to note:

  • The total email size which includes your email headers, body content, inline images, and attachments should NOT exceed 15 MB
  • The total file cache storage capacity for an account is 1GB.

Note:

ZeptoMail does not support the following extensions as attachments:

ade, adp, bat, chm, cmd, com, cpl, exe, hta, ins, isp, js, jse, lib, lnk, mde, msc, msp, mst, pif, scr, sct, shb, sys, vb, vbe, vbs, vxd, wsc, wsf, wsh, app, asp, bas, cer, cnt, crt, csh, der, fxp, gadget, hlp, hpj, inf, ksh, mad, maf, mag, mam, maq, mar, mas, mat, mau, mav, maw, mda, mdb, mdt, mdw, mdz, msh, msh1, msh2, msh1xml, msh2xml, msi, msp, ops, osd, pcd, plg, prf, prg, pst, reg, scf, shs, ps1, ps1xml, ps2, ps2xml, psc1, psc2, tmp, url, vbp, vsmacros, vsw, ws, xnk.

Table of Contents

Upload your attachment:

  1. From the left pane, select the Mail Agent in which the attachment has to be uploaded.
  2. Navigate to File Cache tab. All the uploaded files will be listed here.
    File cache section screenshot
  3. Click on Upload Files in the top-right corner. The upload files pop-up will open.
    File cache section upload button screenshot
  4. Add the desired files either by dragging and dropping or browsing for files in your device. You can add more than one file at a time.
    File cache upload files popup screenshot
  5. Once you have selected the required files, click Attach to upload the added files to File Cache.
  6. A unique File Cache Key is generated for every uploaded file. You can use the File Cache Key while sending emails using API to add an inline image or attachment to your email.
    File cache key screenshot

Note:

You can use the files in File Cache as attachments while sending emails using SMTP too. Add X-TM-FILE-KEY parameter to the header and enter the File Cache Key as the parameter value.

Example: Multiple file cache keys without name - message.addHeader("X-TM-FILE-KEY", "filecachekey,filecachekey"); Multiple file cache keys with name - message.addHeader("X-TM-FILE-KEY", "filecachekey:name,filecachekey:name");

Search an attachment 

You can search a particular attachment using the Search option. To search for an attachment:

  1. Select the desired Mail Agent from the left pane.
  2. Navigate to the File Cache tab.
  3. Click on the Select Criteria drop-down box. Choose the condition based on which you wish to search.
  4. You can search for files using 'File name' or 'File cache key'.
    File cache search criteria screenshot
  5. Enter the entire filename. For example, if the filename is "attachment", search for the filename along with the extension — filename.png and click the Search icon.
    File cache searching for particular value screenshot
  6. The values will be fetched and displayed. 

Delete your attachment 

  1. From the left pane, select the desired Mail Agent where the attachment has to be deleted.
  2. Navigate to File Cache tab. Here you can view the already uploaded files for this Mail Agent.​
  3. Hover over the file you want to delete. Click on the delete icon on the right corner of the image. Once an image or attachment is deleted, it cannot be recovered.
    File cache delete value​

Note:

Before you get started it is important to know that ZeptoMail is for sending transactional emails like welcome emailers, password resets emails, OTPs. We do not support sending of bulk emails or promotional emails like newsletters or marketing campaign emails. If you are looking for a bulk email provider, check out Zoho Campaigns.