In what sense are protist primitive & in what sense are they advanced? You can only upload files of type PNG, JPG or JPEG. 2  You can only upload files of type 3GP, 3GPP, MP4, MOV, AVI, MPG, MPEG or RM. 3  You can only upload photos smaller than 5 MB. 4  You can only upload videos smaller than 600 MB. 5  You can only upload a photo (png, jpg, jpeg) or video (3gp, 3gpp, mp4, mov, avi, mpg, mpeg, rm).
In answer to your question, you can use a Forever stamp, but it won't be enough on its own. The cost of a US Forever stamp is 49 cents, while the cost of a letter to Canada is $1.20. USPS also sells a Global Forever stamp, as others have noted. You can certainly slap one of those on a letter to Canada.
Best Answer: You need 69 cents worth of postage to send a letter to canada. The forever stamp is worth 41 cents, so you still need 28 cents on top of that. On Monday, postage rates go up. Even though your forever stamp will be worth 42 cents on Monday, i'm sure you will still need at least 28 cents more on top of that. If you put two stamps on your envelope, you'll be safe regardless.